import Vue from 'vue'
import Router from 'vue-router'

// in development-env not use lazy-loading, because lazy-loading too many pages will cause webpack hot update too slow. so only in production use lazy-loading;
// detail: https://panjiachen.github.io/vue-element-admin-site/#/lazy-loading

Vue.use(Router)

/* Layout */
import Layout from '../views/layout/Layout'

/**
* hidden: true                   if `hidden:true` will not show in the sidebar(default is false)
* alwaysShow: true               if set true, will always show the root menu, whatever its child routes length
*                                if not set alwaysShow, only more than one route under the children
*                                it will becomes nested mode, otherwise not show the root menu
* redirect: noredirect           if `redirect:noredirect` will no redirect in the breadcrumb
* name:'router-name'             the name is used by <keep-alive> (must set!!!)
* meta : {
    title: 'title'               the name show in submenu and breadcrumb (recommend set)
    icon: 'svg-name'             the icon show in the sidebar,
  }
**/
export const constantRouterMap = [
  { path: '/login', component: () => import('@/views/login/index'), hidden: true },
  { path: '/404', component: () => import('@/views/404'), hidden: true },

  {
    path: '/',
    component: Layout,
    redirect: '/teacher',
    name: 'Dashboard',
    hidden: true
  },
  /**
   * 路由:
   *    点击页面中的路由的链接,应该跳转到组件页面显示
   */
  //---讲师管理
  {
    path: '/teacher',
    component: Layout,
    redirect: '/teacher/list',
    name: 'Teacher', //路由的名称,必须唯一
    //title:路由在页面中显示的名称 icon:路由名称显示时的图标 根据名称在src/icons/svg目录下查找
    meta: { title: '讲师管理', icon: 'eye' },
    children: [
      {
        path: 'list',
        name: 'TeacherList',
        component: () => import('@/views/teacher/list'),
        meta: { title: '讲师列表', icon: 'nested' }
      },
      {
        path: 'create',
        name: 'TeacherCreate',
        component: () => import('@/views/teacher/form'),
        meta: { title: '添加讲师', icon: 'form' }
      },
      {
        path: 'edit/:id',//vue解析edit/1的时候,会使用id变量接收1这个值 $route.params.id
        name: 'TeacherEdit',
        component: () => import('@/views/teacher/form'),
        meta: { title: '更新讲师', icon: 'form' },
        hidden: true
      }
    ]
  },
  //----学科管理
   {
     path: '/subject',
     component: Layout,
     redirect: '/subject/list',
     name: 'Subject', //路由的名称,必须唯一
     //title:路由在页面中显示的名称 icon:路由名称显示时的图标 根据名称在src/icons/svg目录下查找
     meta: { title: '课程分类管理', icon: 'eye' },
     children: [
       {
         path: 'list',
         name: 'SubjectList',
         component: () => import('@/views/subject/list'),
         meta: { title: '课程列表', icon: 'nested' }
       },
       {
         path: 'import',
         name: 'SubjectImport',
         component: () => import('@/views/subject/import'),
         meta: { title: '导入课程分类', icon: 'form' }
       }
     ]
   },
//---课程管理
{
  path: '/course',
  component: Layout,
  redirect: '/course/list',
  name: 'Course ', //路由的名称,必须唯一
  //title:路由在页面中显示的名称 icon:路由名称显示时的图标 根据名称在src/icons/svg目录下查找
  meta: { title: '课程管理', icon: 'eye' },
  children: [
    {
      path: 'list',
      name: 'courseList',
      component: () => import('@/views/course/list'),
      meta: { title: '课程列表', icon: 'nested' }
    },
    {
      path: 'form',
      name: 'courseForm',
      component: () => import('@/views/course/form'),
      meta: { title: '发布课程', icon: 'form' }
    },
    {
      path: 'info/:id',
      name: 'CourseInfoEdit',
      component: () => import('@/views/course/form'),
      meta: { title: '编辑课程' },
      hidden: true
    },
    {
      path: 'chapter/:id',
      name: 'CourseChapterEdit',
      component: () => import('@/views/course/form'),
      meta: { title: '编辑大纲' },
      hidden: true
    }
  ]
},
  { path: '*', redirect: '/404', hidden: true }
]

export default new Router({
  // mode: 'history', //后端支持可开
  scrollBehavior: () => ({ y: 0 }),
  routes: constantRouterMap
})
